I don't mean to be a jerk here, but just saying you disagree a lot with someone is a worthless statement that isn't going to add anything to this conversation.
That said, I couldn't agree with him more.
I loathe upscaled pixelart in games, just the fact only half of a "pixel" can be on screen shows a lack of respect for the medium in my opinion. I think if you want something to be twice as big, then take proper advantage of the pixels and make it twice as detailed.
Again, know I'm only speaking for myself here but there is a mathematical beauty to pixelart and I think it's a waste to not embrace it.
But philosophy aside, these forums have a zoom function built in and I think it's completely unnecessary and inconsiderate to submit a piece in anything other than 1:1.